devdaily home | java | perl | unix | directory | blog


What this is

This file is part of the Tame Swing collection that we have compiled. All of the Java source code in these examples was created by Nobuo Tamemasa. As these examples have become hard to find on the internet, we have put them in one place here, supported by minimal advertising. In time we will include images of each running sample Java/Swing application.

The intent of having these files here is to help you learn Java and Swing by example, and Tame certainly created some terrific examples of the power of the Swing framework.

Other links

Keywords/tags

java, swing, JTable, color, renderer, editor, custom, table, cell, header, model, TableModel, example, sample, source

The source code

/* (swing1.1beta3) */
package tame.examples;

import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSeparator;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.SwingConstants;

import tame.colorchooser.TextColorChooser;
import tame.table.AttributiveCellRenderer;
import tame.table.AttributiveCellTableModel;
import tame.table.ColoredCell;

/**
@author Nobuo Tamemasa
@version 1.0 11/22/98
*/
public class ColoredCellTableExample extends JFrame {
  private JTable table;
  private ColoredCell cellAtt;

  public ColoredCellTableExample() {
    super( "Colored Cell Example" );

    AttributiveCellTableModel ml = new AttributiveCellTableModel(10,6);
    cellAtt =(ColoredCell)ml.getCellAttribute();
    table = new JTable( ml );
    table.setCellSelectionEnabled(true);
    table.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
    table.setDefaultRenderer(Object.class ,new AttributiveCellRenderer());
    JScrollPane scroll = new JScrollPane( table );

    JButton b_fore   = new JButton("Foreground");
    b_fore.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        changeColor(true);
      }
    });
    JButton b_back   = new JButton("Background");
    b_back.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        changeColor(false);
      }
    });
    JPanel p_buttons = new JPanel();
    p_buttons.setLayout(new GridLayout(2,1));
    p_buttons.add(b_fore);
    p_buttons.add(b_back);
    Box box = new Box(BoxLayout.X_AXIS);
    box.add(scroll);
    box.add(new JSeparator(SwingConstants.HORIZONTAL));
    box.add(p_buttons);
    getContentPane().add( box );
    setSize( 400, 200 );
    setVisible(true);
  }

  private final void changeColor(boolean isForeground) {
    int[] columns = table.getSelectedColumns();
    int[] rows    = table.getSelectedRows();
    if ((rows == null) || (columns == null)) return;
    if ((rows.length<1)||(columns.length<1)) return;
    Color target    = cellAtt.getForeground(rows[0], columns[0]);
    Color reference = cellAtt.getBackground(rows[0], columns[0]);
    for (int i=0;i<rows.length;i++) {
      int row = rows[i];
      for (int j=0;j<columns.length;j++) {
	int column = columns[j];
	target    = (target    != cellAtt.getForeground(row, column)) ?
	  null : target;
	reference = (reference != cellAtt.getBackground(row, column)) ?
	  null : reference;
      }
    }
    String title;
    if (isForeground) {
      target    = (target   !=null) ? target    : table.getForeground();
      reference = (reference!=null) ? reference : table.getBackground();
      title = "Foreground Color";
    } else {
      target    = (reference!=null) ? reference : table.getBackground();
      reference = (target   !=null) ? target    : table.getForeground();
      title = "Foreground Color";
    }
    TextColorChooser chooser =
      new TextColorChooser(target, reference, isForeground);
    Color color = chooser.showDialog(ColoredCellTableExample.this,title);
    if (color != null) {
      if (isForeground) {
	cellAtt.setForeground(color, rows, columns);
      } else {
	cellAtt.setBackground(color, rows, columns);
      }
      table.clearSelection();
      table.revalidate();
      table.repaint();
    }
  }

  public static void main(String[] args) {
    ColoredCellTableExample frame = new ColoredCellTableExample();
    frame.addWindowListener( new WindowAdapter() {
      public void windowClosing( WindowEvent e ) {
        System.exit(0);
      }
    });
  }
}

Copyright © 1998-2009 DevDaily.com
All Rights Reserved.